2002-05-10  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcontainermenuimpl.c: don't try to set the
	preview_size of plain GtkMenuItems.

	* app/widgets/gimpdocumentview.c: fixed the "update" and
	"delete dangling" functionals. They got passed wrong user_data.

	* app/widgets/gimpitemfactory.c (gtk_item_factory_set_visible): if
	the widget found is a menu, get it's parent item and show/hide
	that.

	* app/widgets/gimppreview.c (gimp_preview_set_viewable): always
	clear preview->buffer so we don't display previews of vanished
	viewables.